Portable excavating and loading machine



June 9, 1953 Q0. BJAALAND PORTABLE EXCAVATING AND LOADING MACHINE Filed March 28. 1949 3 Sheets-Sheet 1 INVENTOR. C 022M101 0.

June 9, 1953 c. o. BJAALAND 2,641,372

PORTABLE EXCAVATING AND LOADING MACHINE Filed March 28. 1949 s Sheets-Sheet 2 June 9, 1953 c. o. BJAALAND 2,641,372

PORTABLE EXCAVATING AND LOADING MACHINE Filed March 28. 1949 s Sheets-Sheet s R MM INVENTOR.

Zf/aalanol Patented June 9, 1953 UNITED STATES ursar Q i FFlCE 7 MACHINE Conrad O. Bjaaland, CoeurdAlene; Idaho Application March 28, 1949, Serial No. 83,907

My invention relates to improvements ina portable excavating and loading'machine; 3

It is the principal purpose of my invention to provide a novel construction for a portable loader adapted to be carried by and operated by a powered vehicle such as a tractor which is equipped with two cable drums individually connected to the source of power for the vehicle; My invention is directed to a device of this character which is particularly useful in excavating basements under existing buildings, although it is useful for many purposes where loose material is to be elevated and loaded into a truck or the like.

More particularly it is' the purpose of my invention to provide a loader having a long chute and a supporting framework rigid with the chute, the framework being provided with pivot members for supporting the chute on the vehicle, together with an additional framework including removable arms by which the chute may be supported in elevated position over the vehicle or with one end lowered to the ground for loading purposes. f

It is a further purpose of my invention to provide a loader with a novel chute and scoop construction that permits the scoop to be drawn up the inclined surface of the chute and dumped without the scoop getting tipped or tangled so that the entire handling of the scoop can complished by a main drag line connected to one end of the scoop and a haul-back line connected to the other end of the scoop.

Other detailed objects and advantages of my invention will appear from the following description and the accompanying drawings illustrating a preferred form of the invention. It will be obvious however, that various modifications in the detailed structure may be made without departing from the scope of the invention as defined in the claim.

In the drawings:

Figure l is a plan view of the loader embodying my invention;

Figure 2 is a view in side elevation of the loader;

Figure 2 is another view in side elevation of the loader showing it in traveling or road position;

Figures l and are sectional views taken on the line 4-4 of Figure 3 showing the scoop in dumping position in Figure 4 and showing the scoop removed in Figure 5;

Figure 6 is an enlarged fragmentary sectional view taken on the line 6-45 of Figure 2;

Figure '7 is an enlarged fragmentary sectional view taken on the line 1-1 of Figure 1;

be ac- 1 Claim; (Cl. 214105) a distance from the loader.

' 2. Figure 8 isa sectional'view'taken on the line 8-8 of Figure 3; and i Figure 9 is a fragmentary view illustrating the cable blocks for securing the haul-back cable at Referring now in detail to the drawings, my improved loader is shown as mounted on a powered vehicle ll) having an engine I I and support wheels such as l2 and I3. The vehicle has a winch I4 mounted on the rear end thereof and suitably connected by a power take-off (not shown) from the engine H. Another winch I5 is mounted on the side of the vehicle and suitably connected to the. engine. ,A main, drag line or cable I5 is wound on the winch l4 and extends over a pulley H at the upper rear end of a loading chute IS. The. cable I6 is connected to a bail is of a loadingscoop 2ll.v v

The winch carries a hold-back cable 2| which is provided with a hook 22 to hook into an eye 23 of a handle z l on the scoop 26. The holdback cable 2| is extended into the area where the material is to be taken from and around a pair of cable blocks 25 and 2B which are temporarily secured at the desired position in the area to be excavated.

The loading chute I8 is composed of a channel iron bent to form two side rails 21 and 28 and a rear U-shaped portion 29. As shown best by Figures 3, 4 and 5, the channel iron is cut to remove the bottom flange for a short distance forwardly of the U-shaped portion 29 as indicated at 30 and 3 l. A floor plate 32 connects the side rails 27 and 28 from the forward end back to the point where the lower flange is cut off. This floor plate 32 preferably is reenforced by a series of angle irons 33 at spaced intervals throughout its length. The floor plate 32 at its rear end is bent downwardly as illustrated in Figure 7 to provide a dumping chute 34 extending substantially at right angles to the main chute l8. This dumping chute 34 has side rails 35 and 36.

The chute I8 is supported by a framework comprising frame members 31 and 38 welded to the side rails 21 and 28 and extending forwardly and downwardly to terminate in pivot members 39. The pivot members 39 are pivoted on supporting pins 40 on the vehicle l0 just forward of an axle M of the rear wheels IS. The position of the pivot members 39 with respect to the chute I8 is substantially at the center of the weight of the chute. The dumping chute 34 is braced by braces 42 and 43 at both sides of the chute. These braces 42 and 43 connect to the frame members 31 and to the side rails 21 and 28.

A second framework 44 is provided near the forward end of the chute Hi. This framework 44 is composed of two V-shaped side members 45 and 46 which are braced by cross members 41 and 48. Removable rods 49 and B are used to raise the front end of the chute l8. As shown best in Figures 3 and 8, these rods are coupled to the framework 8 3 by bolts 51 and 52 and are mounted on the vehicle frame by bolts'53 and 54. When the chute i8 is lowered to loading position, the rods 49 and 56 are removed and the frame 44 is secured to the front end of the vehicle by the bolts 53 and 54.

An additional intermediate" support for tria I loading chute i3 is utilized when the machine is in operation to load material. For this purposean upstanding inverted U-shaped framejiiissecured on the vehicle and provided with a'cross rod 56. Supporting arms 5'! and 58 aresecured on the side rails 2'7 and 28 in position to engage the (cross rod 56 when the front end of the chute 58 is lowered. H v

The'scoop 2G is provided with projecting arms 59 and 60 near the handle end thereof. Thes, e arms are adapted to ride up on the side rails 27 and 28 as thescoop 23 is pulled along the chute I 8. The arms have forwardly extending end portions. 6! and 62 that are spaced apart far enough toexceed the width of the chute Hi. When the scoop 28 is elevated to dump position, the cable I fi'is allowed to become slack so that the scoop 28 will pivot on the arms 59 and (i0 and swing down into the dumping chute 3 3. The extensions .5! and Gil-straddle the side rails 2! and 28 and keep the scoop 26 from tipping or swinging out of line.

After the load is dumped, the scoop is pulled back'by tightening the hold-back cable 2 I.

This'loader is particularly useful in excavating under existing buildings. The only clearance required to start the operation is suificient room to get the scoop and the h'old-back'c'able' 2i beneath the building. This makes it possible to start excavating with very little manual work and as the excavation is increased the scoop can be shifted around in the excavation manually to complete 4 the excavation which is a great saving in time and manual labor. The chute construction is such that it is easily removed from the vehicle and easily transported from place to place by the vehicle.

Having thus described my invention, I claim: A portable excavating and loading machine comprising a vehicle, an adjustable front framework pivotallymounted' on. the front end of said vehicle, a rear framework pivotally mounted on the rear end of said vehicle, a chute tiltably mouned on said vehicle by means of the pivotal rear frame Work and the removable rods in said front framework for operating and transportation purposes, a material carrying scoop operable with'iir said chute, said chute having side rails and a floor, a dump opening in the upper extremity of said chute formed by turning the floor downward to form a dump chute, the side rails of said chute being extended beyond the dump opening and joined at their terminals, powered winches operable to m-cvesaid scoop up and down within said trough, outwardly extending arms'on the sides of, said scoop enabling the scoop to ride on said side rails of said chute-said arms being placed about half way up and in the rearward portions'of the sides of said scoop to enable said scoop to pivot about said arms when said scoop is brought to a rest over saiddump opening,- and forwardly extending ho'okportions 'on' said arms operableto 'hook'over said chute side rails and hold said "scoop during the dumping operation, CONRAD O. BJAALA'ND.

ReferencesCited in-the file of this patent UNITED STATES PATENTS Number Name Date I I 649,791. Allen Marl-5,1990; 894,016 Knifien' July 2-1, 1908 7963,0351 Connell July 5 1910;

1,026,502 Flodin May 14, 1912; 1,9 3,924 Nickerson Nov. 7, 1933 2,241,275 Shinn et a1. May 1941' 2,420,848 Trinaistich May=20, 1947' 

